Electric-fixture coupling



Aug. 24 1926.

P. J. PFEIFER ELECTRIC FIXTURE COUPLING Filed Apri] 9, 1926 1% J; Rl-ciz 'er 27 him ""59 Patented Aug. 24, 1926.

.; rArE ToPFic' IP-AUL JAMES PFEIFER; or CLEVELAND, onio, AssIGNo'R TO THE VIRDEN COMPANY.

OFCLEVELAND, OHIO.

ELECTRIC-FIXTURE mamas.

Application filed April 9, 1926. seriaiuo. 1001968.

This invention relates toa connection to be interposed between an electric light socket and the supporting fixture which is so constructed. that the light itself will hang vertically, notwithstanding the fact that the fixture or the portion thereof to which the loop is connected may not occupy a vertical position. In such cases it is moreover desirable that the parts of the loop shall not be capable of any extensive rotation about the longitudinal axis thereof, otherwise the conducting wires which usually pass through said loop might become twisted or otherwise damagec.

In the drawings:

Figure 1 is a side elevation with parts in section of a portion of a conventional form of fixture and light socket connected by means of the device forming the subject matter of the invention.

1 Figure 2 is a vertical section through the oop.

Figure 3 is a cross section on the line 33 of Figure 2.

Figure 4; is a cross section on the line H of Figure 2.

Although the device constituting the subject matter of the invention is applicable to many different forms of fixtures it is here shown as employed with a common form of chandelier, a portion of which is indicated at A, which is suspended by chains B, and-has connected thereto any desired or old form of lamp socket C. The conducting wires D pass from the lamp socket through the loop to the upper part of the chandelier.

The loop or coupling constituting the invention is composed of three parts, 1, 2 and 3, of which 1 and 3 are or may be substantial duplicates. The part 1 is shown tubular in shape having an internal bore 4 and one end threaded at 5 adjacent a flange portion 6. This threaded end 5 is adapted to screw into a member such as indicated at E to which the last link of the chain B is attached and the flange 5 fits snugly against the lower surface oi. the chandelier A. The other end of the member 1 is flared outwardly as indicated at 7 and at one side has an extension 8 as illustrated. This part 8 extends somewhat less than half of the circumferential distance of this end of the loop member.

The member 3 is substantially the same shape as themember 1 and has an internal bore 9 outside of which is a threaded end 10 and a flange 11. This threaded end 10 is adapted to screw into a portion of the socket member G and the flange 11 fits snugly 1 against the outside thereof. The member 3 also has an enlarged end 12 which has an extension 13 passing somewhat less than half the way around. the end of the member.

The two parts 1 and 3 are held in operative relation by means of the third member of the loop which when inoperative po? sition as shown in Figure 2 is a central zone of a sphere. The edge portions of this member 14 engage the enlarged ends of the parts 7 and 13 andtherefore hold the three parts in assembled position. The member 14 may be made of a short band of sheet metal which is pressed into position around the adjacent ends of the two members 1 and 3 in any suitable way. This member might also be a section of tubing which is spun into the desired form after the enlarged ends of the members 1 and 3 are inserted therein.

As is shown in Figure 2, the adjacent ends of the members 1 and 3 are slightly separated and due to the spherical form of the retaining member 14 it is obvious that the member 3 which is connected to the light may swing considerably from side to side and will take up a vertical position regardless of the position of the member 1, which is fixed to the chandelier or other support. At the same time, the extensions 8 and 13 which oppose eaohother will allow a slight movement about the longitudinal axis of the loop but only a relatively slight movement which is not sufiicient to twist the wires D which pass through the central bores of the members 1 and 3t0 the light socket.

It will be evident that the invention comprises a simple and relatively cheap three piece loop which can be assembled with ease and which is: capable of use in various situations. It is also apparent that the precisev construction of the loop may be varied without departing from the spirit of the invention. Accordingly, the invention is to be regarded as limited only by the scope of the appended claims.

I claim: 2

1. A coupling for connecting an electric lamp to its support which comprises three members, two of which have ends adapted together do not form a complete circumferonce but permit only slight turning movement about the longitudinal axis of the coupling.

2. A coupling for connecting an electric lamp to its support Wlnch comprises three members, two of which are tubular and have ends adapted to engage firmly the lamp and fixture respectively, and have enlarged ends facing each other, a third zone shaped member loosely surrounding said enlarged-ends,

and cooperating means carried by the first two members which prevent substantial relative movement of said members about the longitudinal axis of the coupling.

In testimony whereof, I have hereuntosubscribed my name.

PAUL JAMES PFE-IFER. 

